2017: another record-breaking year for heat and extreme weather

This report reviews the trends in average global temperature and the extreme weather events that occurred in 2017. The report finds that the global temperature averaged over the last five years (2013, 2014, 2015, 2016, 2017) has been confirmed as the highest ever on record for any five-year period. This record is part of a sharp, long-term upswing in global temperatures, with 17 out of the 18 years hottest years on record all occurring in this century.